Yarn clearer or the like



March 27, 1928. 1,663,856

' B. A. PETERSON YARN CLEARER OR THE LIKE Fiied Jan. 1a, 1925 Patented Mar. 27, 1928.

-:UNITED STATES PATENT OFFICE.

BURT A. PETERSON, OF ROCKFORD, ILLINOIS, ASSIGNOB TO BARBER-COW 001-.

' rm, 0! ROCKFORD, ILLINOIS, A. CORPORATION OF ILLINOIS.

farm cnnnann on run time.

Application filed January 13, 1823'. Serial No. 812,428.

and'other extraneous matter-from the run-- ning thread; whichshall prevent the pas-- sage of an objectionably large bunch in the thread; which shall perform its functions without subjecting the thread to wear; and which maybe easily cleaned'when occasion requires.

It will conduce to an understanding .of the practical re uirements which a yarn clearer must satis y spinning of yarn and the operation preparatory thereto, the fibres are not perfectly age. The general object of the invention,

quirements.

- is an illustration. of one embodiment of the,

therefore, is to produce a yarn clearer which shall meet thesesomewhat conflicting re- In the accompanying 'drawin Figure 1 invention, the. view being taken from the right-hand. side of Fig. 3. Figure 1 is a view, more or less diagrammatic, illustrating the yarn clearer, thedetector, and a means for winding and rapidly traversing the yarn.

Fig. 2 is .avertical sectional view taken in the plane of line 2--2 of Fig. 3. Fig. 3 is afront elevation. Fig.4 is a plan view of certain thread-guiding means comprised in the device. j Y

The yarn clearer herein shown is especially adapted for use in connection with a winder of the ty e disclosed in the Colman Patents Nos. 1,26 ,977 and 1,274,386, granted May V 28, 1918, and August 6 1918, respectively. The winder shown in these patents is provided with bobbin-holders of the side-deliv- -ery type wherein the bobbin is revolved as the yarn is unwound. The present yarn clearer is also adapted for use in a winder of the character shown in the Colman Patmay if some mention be made. of the surface characteristics of yarn. In the a the yarn clearer.

ent No. 1,311,498, dated July 29, 1919. It

also be used in a winder provided' with bobbin-holders of the end-delivery type shown, for example, in my ap lication Serial No. 323,194, filed Septem er 11, 1919, wherem the yarn mass is stationary during the unwinding of the yarn, the yarn being drawn off the upper end of the bobbin. The yarn clearer shown in the resent drawings is also adapted for use with various other forms of spoolers and winders.

The yarn clearer herein shown com rises two downwardly converging clearin b ades, together with means for guidin a t read T to run upwardly between sai 1 blades, the lower edges of the blades being close enough to the path of the thread to intercept matter from which the thread should be freed. The form of thread-guiding means herein shown comprises a lower plate 1 and an upper plate 2, these plates being spaced apart 1n parallel relation by means of an intermediate plate or block 3. The plates 1, 2 and 3 are rigidly secured together and constitute the base of The right hand ends of the plates 1 and 2, as viewed in Fig. 3, project. beyond the. plate 3. Preferably, the. right-hand end of the plate 1 is rounded as indicated in Fig. 4. The lower late 1 has a rearwardly extending notch or s 0t 4 formed therein. The ri ht-hand end of the late 2 is cut away to orm a straight threa idingedge 5 extending perpendicularly to the direction in which the slot 4 extends, said edge 5 being approximately in the vertical plane of the inner end wall 6 of the slot 4.

' The edge of the plate 2 forwardly of the thr pad-guiding edge 5 is rounded, as shown at A finger 8 extending parallel with the plates 1 and 2 is supported above said plates in such position that the edges'5 and 6 and one side of the pin 8 are approximately in thesame plane. One or more pins 9 are arranged above the pin 8 and parallel there to. The pins 8 and 9 constitute a stationary gridagainstwhich the running thread is yieldingly held by one or more detector fingers 10 of the winder mechanism, as shown in Fi 1. Inthe construction herein shown, the grew 8 and 9 are secured to two vertical plates 11 and 12 formed from an integral piece of sheet metal bent to rovide the connecting portion 13. The p ates 11 and 12 are secured to the base of the yarn 'with their lower edges close to 'the tween the guide edge 5 and the guide finger 8. In the form herein shown, th'ese blades are provided with integral clips or sleeves 17 fitting tightly about two shafts 18 and 19. The ortions of said shafts which are surroun ed by the sleeves 17 are of substantially rectangular. cross section; thus the blades are held against movement. with 'relation to their respective shafts. The shafts 18 and 19 are mountedfor rocking movement in the plates 11 and 12, the corners of these shafts being sufliciently rounded to piarmit the shafts to turn in openings-in said ates.

The blades 15 and 16 are yieldingly helil1 at of the thread. Approaching moveme t of the blades may be limited in any suitable way, as, for example, by means of a stop finger 20, one end of which is mounted for slight rocking movement in an opening 21 (Flg. 3) in the plate 12.- The other end of the stop finger 20 extends through a vertically elongated opening 22 (Fig. 1) in the plate 11 into position to be engaged by the lower portions of the blades 15 and 16. The stop finger 20 is held in adjusted .position by means comprising, in this instance, a screw 23 seated in the portion 13 and extending freely through an opening in the stop finger 20. A helically coiled expansive sprlng 24 surrounds the screw 23 and holds t e stop finger 20 up against the head of the screw.

The means for yieldingly holding the blades 15. and 16 in contact with the stop finger 20 comprises in the present embodiment, two leaf springs 25 integrally con-' nected together and supportedupon the fingers 9 between the plates 11 and 12... The

ree ends of the springs 25 bear against levers 26 non-rotatably connected to the shafts 18 and 19. In one of the springs 25 is formed an opening 27 (Fig.2) to provide access to the screw 23.

The lower edges of the blades 15 and 16 are bevelled and serrated to provide a series of relatively broad but sharp teeth 15 at each side of the path of the thread. In serrated yarn clearers of the prior art the teeth were relatively fine or slender. Practical experience with yarn clearers embodying such fine-tooth combs has shown that the teeth 1 catch the fine fibres which extend from the yarn and soon clog up. In fact, by thus collecting fibres a fine-tooth comb acts to form gouts and slubs which may later be.

and carried along on the yarn. Moreover, if the yarn be not guided so that its tension kec the body of the yarn away from the test the latter catch the loops,

which project from the body of the yarn, the loops sliding up the teeth and thus drawing the running yarn' closer and closer to the teeth until the yarn is impaled on one or more teeth and broken. By reference to Fig. 3 it will beobserved that the teeth 15 employed in the present yarn clearer are sufficiently wide so that when a loop catches on a tooth the tooth will expandand' break the loop, thus preventing the yarn from becoming engaged with and broken by the tooth. The relative lateral motion between the toothed blade and the yarn also assists to break loops that catch on the teeth. Furthat the running yarn is guided-at the points 5 and 6.below the edges of the blades 15 and 16, and is guided by the parts 8 and 10 above said blades. The yarn, therefore,

is not positively held away from theteeth. If the fine-tooth combs of the prior art were employed in connection with yarn thus guided, the before-mentioned loops' on the periphery of the yarn would catch on the pointsof the teeth and draw the yarn aside until the yarn became impaled upon a tooth, thereby breaking the yarn. The forward blade 15 is cut away at 28-(Fig. 3) and the shaft 18 is correspondingly shortened so that said shaft and blade shall not project into the path taken by a thread when being placed in the yarn clearer. As shown in Fig.3, the guide plate 2 projects to the right slightly beyond the ends of the blades 15 and 16--so as to .guidethe enteringthread past the end of the blade 15. After the entering thread has passed the guide surface 7,

as the thread is being drawn upwardly be-.

tween the blades 15 and 16' due to the rotation of the cam drum CD. For a full disclosure of 'thecam drum and the manner in which it causes a rapid traverse of the yarn, reference may be had to the Colman Patent No. 1,274,386. The ballooning of the yarn adjacent to the supply bobbin superimposes short rapid reciprocations upon the traverse caused by the cam drum. As will be understood from Figs. 3 and 4, the yarn is free to move laterally in the notch 6 to the extent determined by the width of said notch. The positions between which the yarn T reciprocates are indicated by the dotted lines a and bin Fig. 3. When the yarn clearer is used in winderswhere such lateralmotion is imparted to the thread, theteeth of the yarn clearer are particularly effective, as

to detach from it anything engaged by the blades 15 and 16.

If desired, means may be provided to swing either or both of the blades 15 and 16 away from their normal position. Herein, the shaft 19 is shown as having an angular portion 29 constituting a crank arm' for swinging the, blade 16. When the yarn clearer is used in an automatic winder, as, for example, in a winder of the type shown in Patent No. 1,267,977, the traveling mechanism of the winder is provided with a cam bar arranged to depress the crank arm 29. The travelin mechanism also comprises means for discharging the spent bobbin from the bobbin-holder. If there be astrand of yarn extending from the spent bobbin up through the yarn clearer such strand is drawn down with the bobbin when the latter is discharged, the strand carrying with it such lint, etc., as may be "clinging ,to the blades 15 and 16.

and thread are intended to include any analogous material.

It will be apparent that certain features herein shown are adapted for use in various types of textile apparatus, as, for example,

' yarn-tensioning devices and yarn guides.

the stop finger.

2. A yarn-clearer having, in combination,{

a supporting structure, parallel rock shafts I claim as my invention:

1. Ayarn clearer having, in combination, plates 111 and .12, parallel rock shafts journaled in said plates and projecting at one side of said plates, yarn-clearing blades on said projecting shaft portions, a stop finger supported at one end in one of said plates and extending through the other plate so as to be movable relative thereto and projecting between said blades, means for holding said stop fin er in adjusted position,

and means for ho ding the blades against journaled in said structure and projecting at one side thereof, yarn-clearing blades on said projecting shaft portions, a stop finger supported b said structure and rojecting between sai blades, means for ho ding said stop finger in adjusted position, and means figrg holding the blades against the stop er. v3. A yarnv clearer having, in combination, a rock shaft, a yarn clearing blade on said shaft, another yarn-clearing blade opposite and close to thefirst blade, and a crank arm on said shaft for pivotally moving the first blade to swing it laterally toward and from the second blade.

4. A yarn clearer having, in combination, a plate having a slot therein, said slot having a rear end wall constituting a guide for a running thread, said wall being sufiiciently long to permit lateral motion of the thread, another plate above the first mentioned plate and overlying said slot, the forward .side of the second plate being rounded to guide the entering thread into position rearwardly of the second plate, a third guide above the'second late, one side of said third guide, the rear e ge of the second plate and the end wall of said slot being approximately in the same plane, and clearing means arranged to act upon the thread at a point between the second plate and the third guide.

5. A device to act upon yarn having, 1n combination, a plate having a slot therein,

said slot havinga rear end wall constituting a guide for arunning thread, said wall being sufliciently long to permit lateral motion of the thread, another plate above the first mentioned plate and overlyin said slot, the,

forward side of the secon plate being rounded to guide the entering thread into position rearwardly of the second plate, a third guide above the second plate, and means arranged to act upon the thread at a point between the second plate and the third guide.

6. device to act upon yarn having, in combination, a plate having a slot therein,

said slot having a rear end wall constituting a guide for a running thread, another plate above the first mentioned plate and overlying said slot, the forwardside of the second plate being rounded to guide the entering thread into position rearwardly of the second plate, a third guide above the second plate, and means arranged to act upon the thread at a point between the second plate and the thirdguide.

7. A yarn clearer having, in combination,

a supporting structure, two parallel rock shafts mounted in said structure, a air of yarn clearing blades mounted on sai shafts for relative lateral swinging movement, adjustable means for determining the normal position of said blades, and spring means for holding the blades in such position.

i 8. A yarn clearer having, in combination, two yarn clearing blades mounted on parallel axes for relative lateral swinging movement, adjustable means for determining the normal position of said blades, and spring means for holding the blades in such position.

9. A.yarn clearer having, in combination, two pivoted yarn-clearing blades adapted to swin laterally toward and from each other, an a justable sto between the blades, and s ring means for olding the blades against 10. A yarn clearer havin in combination, two pivoted arn clearing lades adapted to swing latera ly toward and away from each other, spring means tending to swing said blades toward each other, an adjustable stop between the blades for limiting the movement thereof by said spring means, and man--- ually operable means for swinging the blades against the action of said spring means.

11. A yarn clearer having, in combination, guide means for a running thread, said guide means permitting lateral motion of the thread, and yarn-clearing blades located close to and at the opposite sides of the path of the thread with their flat faces in opposed relation, one ofsaid blades being pivotally movable into and out of operative position.

12. A device "of the character described comprising, in combination, a rock shaft, a yarn clearing blade on said shaft, a second yarn clearing blade opposite and close to the first blade, spring means tending to move the first blade toward the second blade, and

adjustable means for determining the normal relative positions of said blades.

whereby the latter serve to'hold the bladesin operative position.

14. A device of the character described comprising, in combination, a pair of rock shafts mounted to turn on parallel axes, a yarn clearing blade'carried b each of said shafts, a lever on each of said shafts, and spring means'acting upon each of said levers whereby to rock said shafts in opposite directions.

15. A device .of the character described comprising, .a pair of rock shafts mounted on parallel axes and each having a 'yarn clearing blade thereon, spring means acting to turn said shafts in opposite directions whereby to move said blades together, and adjustable means for determining the relative positions of said blades."

16. A device of the character described comprising guides for a running thread, a pair of shafts mounted to turn on parallel axes and s aced a substantial distance on opposite si es of the path of the running thread, apair of yarn clearing blades carried by the respective shafts and depending therefrom downwardly and inwardly toward each other, means operating to move said blades together, and means located between the blades near their lower ends-to hold them in properly spaced relation.

17. A device of the character described comprising, in combination, guide means for a running thread, yarn clearing means located between the guide means and includrelation and respectively having portions inclined toward each other, and a stop finger' with which such inclined portions of the blades engage to determine their relative positions.

18. In a winder in which the yarn is rapidly traversed, in combination, guide means for the running yarn adapted to permit lateral motion of the yarn, and a yarn.

clearer located between said guide means and including a pair of toothed blades mounted at opposite sides of the ath of the rapidly traversed yarn, said bla es providing opposed toothed surfaces between which the yarn passes so as to be cleared ing-a pair of blades mounted in opposed thereby, said guide means permitting rapid traverse of the yarn, the teeth of said blades being relatively broad so as to reduce to a minimum the collection of lint and fiber, and break any peripheral loops on the yarn which the teeth may enter.

19.'A winder having, in combination, a

serrated member close to the path' of the yarn, means for causing relatively rapid traversing movement between said serrated member and the yarn, and yarn guide means which will'permit such rapid traverse, the teeth of said member being relatively broad so as to reduce to a minimum the collection of lint and fiber, andbreak any peripheral loops on the yarn which the teeth may enter. v

20. A arn-guiding structure havin in combination, a member having a notch therein in which the yarn may have limited lateral movement, the rear wall of said notch constituting a guide for the yarn, another member above the first mentioned member and overlying said notch, one side of the second member being rounded to guide the entering thread into position rea-rwardly of the second member, and a third guide above the second member, one side of'the third guide, the rear edge of the second member and the rear wall of said notch being approximately in the same plane.

In testimony whereof I have hereunto affixed my signature. 1

A. PETERSON. 

